Troubleshooting For Slow Run (Troubled Engine) - TGB Hornet 50 Service Manual

2-8-4 Troubleshooting for slow run (troubled engine)

Check for contamination in spark plugs and excessive gap
Fair
Alarming abnormality of ignition timing
Poor
adjustment
Replacement of
the filter grill
Poor slow run
Fair
Is the air filter grill
obstructed?
Fair
Poor
Is the carburetor buoyant
level normal ?
Fair
Check if the choke valve
fails (valve does not
open) ?
Poor
Correction
Check of for air between the
carburetor and the air inlet
Add tightening force or
replacement of the washer
Analysis of potential causes
Poor
Cleaning and
adjustment
Poor
Adjustment or replacement of
the buoyant needle valve
Fair
Poor
Fair
Check for obstruction in
the carburetor slow
Poor
Cleaning
Check for air leakage in the cylinder washer,
check wear of cylinder, piston, piston ring
and other elements with correction,
22
Dirty spark plugs
Incorrect spark
plug gaps
Incorrect ignition
timing
Obstructed air
filter grill
Poor carburetor
buoyant needle
valve
Poor carburetor
choke valve
Poor engagement of
carburetor and
inlet tube
Obstructed
carburetor slow
injection
Poor engagement of
cylinder head
washer
Severe wear of
cylinder, piston,
piston ring
Fair
Test the compression
adjustment or replacement